Rim structure.



HIM STRUCTURE. APPLICATION FILED 1uNE 21.19171 Patentedsepf.. 17,1918.

lessi Application led .Tune 21 "To; allwkom t .may concern.'

B. Arxius, Ja'citizen 4- ofthe United States,residing at4 y`Akron7 inthe county oi" Summit and State -vof Ohio, have invented new and usefulImr proveniente in Rim Structures, oi' which the i' following is aspecification.

My present invention relates to rims for rdetachably' mounting' vehicletires upon their wheels. Rims of thi`s type usually include .a-bas'emember secured to the Wheel felly :.aiidforined up along one edge toprovide zziiange which will prevent lateral displacem'entof the vehicletire at thatside of the rilng .The opposite side ofthe rim isforinedto'producean annular gutter in which may be detachably seated a splitvannular flange :for bead engaging ring `having a cross-sec- .jiange,althoughl it is removable iii order to tional; shape similarV to thevintegral rim i permit the disinounting of the tire vfrom its rim.

One ofthe main objections to this type of'vehicle .wheel rim arises fromthe fact `that some means must be provided to cony Y neet extremities ofthe split locking ring, as

lotherwise this ring would work loose from f :its ring channel and causean unlocked for displacement of the tire from its rim. This fisdue tothepfact that the side rings of the prevailing types of separablerim-structures are customarily'of the"oating type, that y isj theyfit'in their rim channels relatively loosely` in order to facilitatetheir removal 'f1-'when dismounting a tire from the rim.

` /'lt is. one loi the principal objects of this -finvention5accordingly, to provide a rim of thelsectionaltyl'i'e in which thenecessity of providing fastening means for the adjacent extremities ofthe split locking ring is obivi-ated. Thisobject is gained by formingthelocking ring channel, or gutter, obliquely to the base portion of therim and by constructing the locking ring with inherent or finbuiltvcontractile resiliency` and with an f oblique anchoring edge which isadapted to seat within the locking channel and to maintain theriiigtherein against all normal tendency to' become displaced.

g' -,-.l" t. is a further object of the present in- 1 vention totprovide a locking ring for a secf` f; tional tire. rim which is of suchconstruc- .jtion and which is :so seatcdupon its rim thaiv :amSTRUCTURE.

avaimsicoe y.-JTlLli/.l'ii B. ATKINS, OF AKRON, OHIO, ASSIGNOR T0 THEGOODYEAR TIRE t RUBBER j y' COMPANY, OF AKRON, OHIOpA CORPORATION OFOHIO.

specification of Leiters Patent. Patnted Sept, 17,1913,

, 1917. Serial No. 176,092.

a unique bearing is provided for the ring, and one. which prevents anytwist or lateral displacement of the side ring withrrespect to the rim,byV utilizing the force of tire expansion to all the more iirinly seatthe ring in its channel.

The above and additional" objects of a similar nature, which will behereinafter more 'speciiically treated, 'are preferably accomplished bysuch means as'are illustrated in the accompanying drawings, described inthe following specification, 'and then more particularly pointed out inthe claims which are appended hereto and form a part oftiiisapplication. y I Y With reference to the drawings, wherein there hasbeen illustrated a preferred enibodiment ofthe invention as it isreduced to practice, and' throughout the several views of which, similarreference numbersv designate corresponding parts:

Figure l is a fragmentary perspective view of a tirenwunted upon thesectional rim of this invention;

F1g-2 is a cross-sectional view ofthe rim ot liig. 1 as constructed toprovide the double'. bearing for the detachable iiange ring; and

Fig. 3 is a niodificationof the rim to suit.

a type of tire differing from that of Figs. l and 2.

It should be understood that-one fault of rim construction which must berigorously ,Y guarded against by the manufacturer is the tendency of aange ring to spread away from the fixed rim flange opposite, when thetire is fully infiatedor over-inflated. The widening of the tire base byeven the minute spreading caused by a partial twisting of ufacturers ofstandard rims, the ring not being permitted to exceed this limit ofspread during-theinfiation of the tire `from twenty five pounds airpressure up' to one hundred and sixty'pouiids of pressure;

or xed ring-.is set at .07 of an inch by man-q ioo In the past,niafkers'f-of'sectional riinsfin I producing a sp'readless,l rin'i, havedepended 1- isremovably seated? aieating split ring-ha' upon afstraight?riinchannel, 'i'.Ze., one at right angles to thebdSeffothe-rim, inwhich' essi' Avait/tete cop* i il. ingta bearing in the bottom of therim channel. or gutter, this ring having its.y adyaeent extremitiessecured tothe rim by vsome type of detachable fastening meansholding thefiange ringimmovable in its channel when correctly placed.

"This practice is objectionable in so far as regards 4the fasteningmeans for the extremity of the split ringas these fasteners are prone tobecome rusted to the ring in such fashion as tobe' non-removable withoutthe aid of heavy ltools, which,.in turn, are liable to injure thefastener to such yan extent. that it becomes unserviceable for continueduse. Even when the 'removable flangr'lgring is provided with an inbuiltcontractile Vresiliency, Swhich takes it out ofthe floating ring classagainst possible twisting to safely Arest this ring in the channelunaccompanied by some1 means securing the split ends of the ring to therim.

. According to this invention. however, it is possible to eliminatekallcfor'ms and types-of the heretofore.indispensable split ring fas-yteners by the simple, yet extremely efiicient expedient 'of incliningLlaterally inwardly the channel 9 which is provided `in the inwardlyyextending'int'egral annular offset S'on the rim. base 7, and similarlyinc-lining' the annular flange `stem 6 which' seats the flange ring lntosuch channel. while at'the same .y time building such; contractile`springing force into the flange-ring to cause it to hug the sides ofthe riniehannel or `gutter closely.

One serious objection. howeverv` which can bev advanced againsftthestructure which was previouslyproposedpin this artarises from the factthat the detachable fiange-ring-has by' actual test and-e.Xperiinentdoeen found to spread farther from the fixed rim flange 11Athan is altogether ,desirable` that is, beyond the -stendardlimit .07of an inch.

LForthis reason tlie flange ringl 5 has vheen lmproved and reconstructedby this invention inthe maimerillustrated more particuside ring.,r byninler-iniation orsuper-intla larly` in Figs: 1 and 21 in such fashion,as to give ita bearnnz upon both s 'ides of the outer channel edge' andalso interiorly of thechannel at the saine time. the, first bearingbeing locatedlin prolongation of 'the resultant of the linwof t'weecaused to be exerted on. the

tion'of a tire.` 1.0 mounted onthe rim."

The flange-ring is enlarged upon its outward' sldeby the addition ofenintegral annular l'shoulder lavhich overlaps the outer channel rim 1nthe 'snug fashion shown,l affording vthe ring a pair of o bliquelyintersecting and annular bearing faces 16 and 17 adjacent to theinneif'corner ofthechannel i rim rwhich together operate as a ydoublebearing to prevent any torsional movementd the flange-ring 5. atthesa'me time the oppo-` site side the ring 5 1s enlarged top rovlde.

without fasteningv inerme and that no northere is not al sufficientguard`4 afan possibly twistsaid flange-ring upon its capable-'of'accomplishing such results. unlessv b v the channel. one of .thesh'ouldeisibeing"` engaging bearingsurface and with an anguy larYover-hanging bearingxvsurfacekthe elon']- f an annular shoulder 18lwhich affords tln'i'tf side of 'the 'ring` an annular bearing patlijlQA3 upon the inner surface of-tliechannelg` The silit flange-ring 5 hassuchdqohifae tile resiliency that it v`can besprung into Y( sition inthe'inclined channel; 9,` anch-w ien the tire is in place upon-the rirnandis inf"l iiated, the fla1ige-ring .fleeps itsfplace'i'n the inclinedchannel J regardless ofthe 'fact that no fasteming means are/provided to'sei cure the. ends of the flangfring 5 Atov the rim. Actual tests takenuponthe improyed` rim structure shown lin Figs; l., and 2', and,V themodificationshowgin Fig. 3, lprove that the. flange-ring l 5 willv stayin place mal iniiationor overiniiation offthe tire double bearing inthe. rim gutter 9,.to.sueh an extent as to spread .said detachable?{hinge-ring from the fixed rimilange llto any perceptible l`e..\'tent.FiggB disclosesa ,rim constructed on principlestidentical with those setforth inthe foregoing but adapted for elenchei' tires instead-.ofthe,"vstrlaiirlit-` side`l` oi"nohook"` 'type of tires chosen Vforillustration in the. remaining figures. The side 'ring used with the rimof Fig 3 has'. the vnovel and successful donblelbearing `which thisinvention has foundso necessary andinlvantageous.

1t is known to theV present inventor that removable split side rings-forsectional rims have been previously oifered tothe. art in which the ringwas formed with laterally swellingshoulders overlappingthe adjacentsides ofl the. rim channel in which the.' ring was mounted. lt is heredesired to" point out` however` thatthese prior detacln able rim siderings` although lsomewhat similar in shape to that herey proposed, werenot oii'ered to accom )lish the saine rvresult as' 4the ringl hereindelineated, nor are they they be modifiedin accordance'with the disi yclosures herein. 'lhe'overlapping flanges;y of previous side-rings wouldbe, quite help less to prevent a twistingrv of the .Ping vin its rimchannel. were it not for 'the firnrfasteir. 1 ing` of the extremities,of thesplit ring to` the rim base. t i What I claim is:

1. A rim-structure includingl an annui: base-Ineinlnfr formed with anlintegralv outstanding"annularfiange and with anl integraldepending:portion provided withay relatively deep ring-seating; channeland' formed with unalinedshoulders (s p aeed aparty formed vby anoutstandingseetion. of ythe channeled seatingportiom and a flange-ringseparably associated vwith the'ehannel `and. formed at one sidewith` anelongated wall- V10 vented.

BEST AvAi-LABL con gated surface contaeting with 'one Wallv of thechannel Aand the overhanging surface en-` gaging with the shoulder on anoutstanding section of the channeled seating portion, the

Y 5 ring being formed on its opposite side with v fi ciirvedbezii'ingface to engage the correspondinglyeformed shoulder on the dependingseating portion, wherebyv twisting movement 'of the flange-1'" l 2. Arim-structure comprising an ennular lease member having along one sidethereof an outwardly projecting integral -iiinniilar Hnge and havingalong its other i5 side ,an inwardlyyrojecting' integral :m-

nula-r offset.'Y provided with an endless channel yformed'oblique to theouter face of ng in its seat is pref said base member, and' a one-piecelsplit Hnge-ring having an linherent contractile resilience so that itcaii'be sprung into placeA into Said channel and maintain itself againstdislodgnient from its seat in -said channel, e;

said flange-ring having on opposite sides v thereofl annular shoulderswhich provide a,

two-'point bearing on the channel sides for maintaining Said flange-ringagainst twist-v ing movement. Y

In testimony whereof I lhave signed my name iii the presence of twosubseribing Wit-

